This listing is for a set of eight (8) spark plugs. The spark plugs are from Autolite. The spark plugs are NEW and unused. The part number on the spark plugs for this listing is HT0. If you are needing a colder spark plug due to performance modifications (supercharger or nitrous), these plugs are one step colder then the OE plugs on the applications listed below. I also have other spark plugs in stock including Motorcraft in stock heat range on these applications. Email me if interested. These plugs are one step colder heat range for the following applications.

• 2005 2006 2007 2008     Mustang GT 4.6  3 valve (P)

On the applications below, the plugs are two steps colder then stock:

• 2004-2006         F-150, F-250 with 5.4 3 valve engine